1.No, they didn't (They stayed at home)

2.No, they didn't (They helped their parents)

3.They helped their parents (Câu 2 của đoạn)

4.They were working on the garden (Câu 3 của đoạn)

5.They were working on the garden (Câu 3 của đoạn)

6.No, he wasn't (He was helping his father)

7.He was helping his father (Câu 4 của đoạn văn)

8.Mary was helping their mother (Câu 4 của đoạn văn)

9.Yes, they were (Câu 5 của đoạn văn)

10.Yes, they were (Câu 5 của đoạn văn)

$\text{1.}$ No, they didn't.

$\text{→}$ Last Sunday Tom and Mary stayed at home.

$\text{2.}$ No, they didn't.

$\text{→}$ They helped their parents.

$\text{3.}$ They helped their parents.

$\text{4.}$ They were working in the garden.

$\text{→}$ When the teacher came, they were working in the garden.

$\text{5.}$ They were having their parents when the teacher came.

$\text{→}$ Tom was helping his father and Mary was helping her mother.

$\text{6.}$ No, he wasn't.

$\text{7.}$ He was helping his father.

$\text{8.}$ Mary was helping their mother.

$\text{9.}$ Yes, they were.

$\text{→}$ They were tired.

$\text{10.}$ Yes, they were.

$\text{→}$ They were tired, but they were happy.